constant chordal tooth thickness固定弦齿厚
chordal tooth thickness[机] 弦齿厚;弦齿厚
noumal chordal tooth thickness法向弦齿厚
chordal l thickness弦齿厚
normal chordal tooth thickness[机] 法向弦齿厚
Transverse chordal tooth thickness端面弦齿厚;弦齿厚
constant chordal tooth thickness measurement固定弦齿厚测量
Normal chordal thickness法向弦齿厚;法面弦线齿厚
Normal l chordal thickness法向弦齿厚